Description
Chengchi DQT dual-liquid quenching tank, dual-media quenching tank,
experimental quenching tank, quenching water tank, quenching oil
tank, automatic quenching tank, experimental quenching tank, small
quenching tank
Chengchi brand DQT dual-liquid quenching tank, dual-media quenching
tank, experimental quenching tank, quenching tank, quenching water
tank, quenching oil tank, automatic quenching tank, experimental
quenching tank, small quenching tank is a special quenching tank
customized according to the needs of the Chengchi Industrial
Furnace dual-liquid quenching.
Double liquid quenching tank is equipped with quenching water tank,
quenching oil tank and control system. Quenching water tank and
quenching oil tank can also be placed according to the quenching
process requirements of different quenching media, and the two
tanks have separate stirring mechanism, heating mechanism,
temperature display and control system. Not only can they be
controlled separately, but also the water entering into the
quenching oil can be removed quickly by heating the quenching
oil.
PS: About double liquid quenching
The two-liquid quenching method is to remove the quenched workpiece
from the quenching temperature and cool it first in a fast coolant,
so that its austenite is rapidly subcooled to close to the
martensitic transformation region, and then cooled in a slow
coolant. Water is usually used first followed by oil.
The advantage of the two-liquid quenching method is that the
austenite is cooled quickly in the unstable region, while slow
cooling is carried out in the martensitic transformation region.
Thus, the organizational and thermal stresses are relatively small,
so this quenching method can be applied to the hardenability of
high carbon steel shape complex tool quenching. But the use of this
quenching method also has its disadvantages. First, it is difficult
to determine the residence time in the kind of quenchant. If the
residence time is too long, resulting in excessive internal stress,
losing the significance of the two-liquid quenching; if the
residence time is too short, it is possible to occur in the second
coolant to the pearlitic type of organization, and thus fail to
meet the requirements. Sometimes although the surface has reached
martensite, but the center part of the temperature is still high.
Excessive residual heat, so that when the workpiece from the kind
of coolant moved into the second coolant in a moment, it is
possible to occur from the inside out of the heating, resulting in
inappropriate surface tempering. Secondly, the moment the part is
removed from the kind of coolant and put into the second coolant,
the temperature of each part of the workpiece is not uniform, which
in turn will cause quenching defects. Therefore, when using this
method of quenching, quenching workers are required to have
sufficient experience and skill, otherwise it is difficult to
achieve the desired purpose.
